[Structural organization of adrenodoxin using limited proteolysis].

The microheterogeneity of adrenodoxin preparation was established by endogenous proteolysis. The controlled limited trypsinolysis and endogenous proteolysis result in modification of the COOH-terminus of the polypeptide chain with a formation of a protein with Mr = 10 000. The interaction of this protein and of the native protein with cholesterol-specific cytochrome P-450 and adrenodoxin reductase occurs in a similar way.